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Which GNSS antenna to use for the MTi-G-700 and MTi-G-710

GNSS/INS devices require an antenna. Next to the standard antenna that Xsens delivers with the Development Kits, Xsens has tested other antennas as well. 

Tested antennas

Antenna name Supported constellations
PCTEL 3910D, 3 meter (no longer sold by Xsens, was default antenna for MTi-G-700) GPS
ANT-P: PCTEL 8117D, 3 meter, no magnets (default antenna for MTi-G-710 and MTi-7-DK). Same footprint as 3910D. GPS/GLONASS
ANT-MULTI: Tallysman Wireless 4721, 3 meter (default antenna for MTi-670-DK) GPS/GLONASS/BeiDou
Tallysman Wireless 2710 GPS/GLONASS/BeiDou

Both Tallysman and PCTEL have many configurations (with/without magnets, cable lengths, connectors), so contact them for more information. Most of their antennas are also available with worldwide distributors as Farnell, Mouser and Digi-Key.

Using other antennas

For the MTi-G-710, the antenna must be connected to the SMA connector on the front panel or the u.FL connector on the OEM-board.

When using another GNSS antenna than the one supplied as a part of the MTi-G-700/710 Development Kit, one has to consider the antenna gain of the active antenna. It is recommended to only use active antennas with gain between 15-50 dB. The voltage supplied by the MTi-G-700/710 to the SMA or u.fl connector (OEM) is 3.2 to 3.3V. An active antenna can be supplied at a maximum of 100mA @ 3.3V. 

Patch antennas are not suitable for hand-held devices, because of the de-tuning effect of the hand/body. The hand/body will dielectrically load the patch antenna, which will de-tune the resonant frequency of the patch. For this purpose a helix antenna is recommended.

In contrast to helix antennas, patch antennas require a ground plane for operation. Helix antennas can be designed for use with or without a ground plane.

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